I attended the captain's run of the Wallabies vs Samoa test last year. JOC (James O'Connor) was one of the three players doing goal kicking practice at the end of the session.
I would be surprised if he wasn't doing any goal kicking at the Reds.
Hes a very natural striker of the ball, I would say it must be a workload thing or precautionary to prevent injuries he may have had in the past. We all know he can kick goals.